Littelfuse 2.5 A Resettable Fuse 60V Radial Lead RKEF250

Littelfuse RKEF250 is a 2.5 A resettable fuse with a 60V rating designed to protect electrical and electronic circuits from excessive current conditions. This device automatically switches from a low resistance to a high resistance state upon electrical overload or short circuit and resets itself once the fault is cleared and power is removed, ensuring maintenance-free operation for repeated use.

Equipped with radial leads, it facilitates easy connection to printed circuit boards. With a trip current of 5 A and a trip time of 15.6 seconds, it provides rapid and reliable circuit protection. Its compact size - 14 mm length, 20.6 mm height, and 3 mm width - suits applications with space constraints.

Its operating temperature ranges from -40°C up to 60°C, and it features low resistance values (minimum 0.04 Ω and maximum 140 mΩ) along with a power dissipation capacity of 2.8 W, ensuring stable performance under varying electrical loads.

The RKEF250 fuse is certified by CSA, RoHS, TUV, and UL, affirming its adherence to international safety and quality standards.

Main industrial and commercial applications span across security systems, power supplies and transformers, automotive and medical devices, instrumentation, computer peripherals, audio-visual, and telecommunications equipment, making it ideal for both protection and reliability in diverse environments.

Automatic resettable design offers reliable circuit protection without fuse replacement. Radial lead orientation simplifies PCB installation and wiring. Trip current of 5 A ensures quick reaction to fault conditions. Compact dimensions facilitate use in tight spaces.

Wide operating temperature range from -40°C to 60°C. Certified to CSA, RoHS, TUV, and UL standards for safety and quality. Suitable for security, automotive, medical, instrumentation, and telecom applications.

This Littelfuse resettable fuse is sourced from China and presented new, meeting stringent industrial requirements for reliable overcurrent protection. Browse more Resettable Fuses and circuit protection devices on EnvMart to find the perfect match for your electrical and electronic projects and systems.